Vertical stacking type energy storage structure and energy storage equipment

Abstract

The utility model relates to the technical field of energy storage structures, and discloses a vertical stacking type energy storage structure and energy storage equipment, the vertical stacking type energy storage structure comprises a plurality of vertically stacked and fixedly connected battery box bodies, each battery box body comprises a bottom plate and side plates arranged on the periphery of the top surface of the bottom plate, and the bottom plate and the side plates on the periphery enclose a frame body with an opening at the upper end; a cooling unit is arranged on the bottom plate, and the bottom plate of the battery box body on the upper side is used for sealing the opening end of the frame body of the battery box body on the lower side in the vertically adjacent battery box bodies. According to the utility model, the upper and lower sides of the batteries in the stacked battery box body can be quickly cooled, so that the problem of poor heat dissipation performance of a plurality of vertically stacked battery box bodies in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage structures, and in particular to a vertical stacking type energy storage structure and energy storage equipment. Background Art

[0002] In the existing battery box structure, most battery boxes use a frame structure to store and protect the batteries. The current battery box structure mainly includes a bottom plate, a frame, and a top cover, wherein the frame is fixedly connected to the top surface of the bottom plate so that the bottom plate and the frame form a frame structure with an upper opening. When in use, the battery is installed and fixed in the frame structure, and then sealed with the top cover. In addition, when the system requires a larger battery capacity, multiple battery boxes are usually used. Currently, a specific installation frame is set up, and then multiple battery boxes are installed and fixed in the installation frame in turn, and the installation frame is used to install and protect the battery box.

[0003] The existing mounting frame structure can be used to install and fix multiple battery boxes, but in actual application, the battery boxes need to be hoisted into the mounting frame one by one, which is not only complicated to operate, but also the manufacturing cost of the mounting frame is relatively high. The mounting frame itself is large in size and heavy, causing many inconveniences in use. In response to this, the inventor improves the structure of the existing battery box, eliminates the use of the mounting frame by improving the structural strength of the battery box, and uses the battery box structure itself as the mounting frame, thereby simplifying the structure of multiple battery boxes stacked and connected and reducing the overall weight.

[0004] Although the improved solution of the inventor can simplify the structure and reduce costs, for the stacked battery boxes, the heat dissipation effect of the battery boxes is hindered because the upper and lower adjacent battery boxes are closely connected to each other. Especially for battery modules with higher heat dissipation requirements, it is necessary to further improve the battery box structure to meet the efficient heat dissipation of the battery. Utility Model Content

[0005] The utility model aims to provide a vertically stacked energy storage structure and energy storage equipment to solve the problem of poor heat dissipation performance of multiple vertically stacked battery boxes in the prior art.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a vertically stacked energy storage structure, comprising a plurality of vertically stacked and fixedly connected battery boxes, the battery boxes comprising a bottom plate and side plates arranged around the top surface of the bottom plate, the bottom plate and the surrounding side plates form a frame with an open upper end; a cooling unit is provided on the bottom plate, and in the upper and lower adjacent battery boxes, the bottom plate of the upper battery box is used to seal the open end of the frame of the lower battery box.

[0007] The principle of this solution is: in this application, the structure of the existing battery box is changed, the upper cover part of the existing battery box is cancelled, and the bottom plate in the upper battery box is directly used as the upper cover of the lower battery box, that is, after multiple battery boxes are vertically stacked and fixedly connected, the bottom plate of the upper battery box can seal the open end of the top of the lower battery box, which not only enables the lower battery box to form an enclosed space to provide stable protection for the batteries installed inside, but more importantly, the cooling unit arranged on the bottom plate of the upper battery box can not only cool and dissipate the batteries inside itself, but also the bottom plate can dissipate heat for the batteries in the lower battery box, ultimately allowing the upper and lower sides of the batteries in a battery box to be dissipated by the bottom plates on the upper and lower sides, effectively improving the heat dissipation effect after the battery boxes are stacked.

[0008] The beneficial effects of this solution are:

[0009] 1. Effectively improve heat dissipation performance: Compared with the prior art, in which the batteries installed in the battery box can only be cooled by the cooling structure set on the bottom plate, the heat dissipation effect is average. In this application, when multiple battery boxes are stacked vertically, the upper and lower sides of the batteries in one of the battery boxes can be cooled by two bottom plates at the same time, effectively improving the heat dissipation effect of the batteries after the battery boxes are stacked and connected.

[0010] 2. Installation and connection are more convenient and efficient: The battery box structure in the prior art has an upper cover. When the battery needs to be disassembled, the upper cover needs to be disassembled, which makes the operation more complicated. In this application, the bottom plate of the upper battery box is directly used as the "upper cover" of the lower battery box. After the upper and lower adjacent battery boxes are fixedly connected, an installation space for stable installation and storage of batteries can be formed, and the installation and connection process is more convenient and efficient.

[0011] 3. Lighter weight: In the present application, since the upper cover structure in the conventional battery case is eliminated, it not only saves materials and reduces the production and assembly costs, but also effectively reduces the weight of the entire energy storage structure. Compared with the current form of using a mounting frame to install and fix the battery case on the market, and the improved method of using the battery case directly as a mounting frame by the inventor, the structure is simpler and lighter, making the transportation and transfer of the energy storage structure more convenient and labor-saving. Preferably, as an improvement, the side panels include side panels located on the left and right sides of the bottom plate and end panels located on the front and rear sides of the bottom plate, and the outer sides of the side panels are provided with upper fixing portions and lower fixing portions protruding from the side panels; in the upper and lower adjacent battery cases, the lower fixing portion of the upper battery case is in contact with and fixedly connected to the upper fixing portion of the lower battery case.

[0012] In this solution, the upper fixing part and the lower fixing part structure on the outer sides of the two side panels can effectively improve the structural strength of the battery box, so that the battery boxes can provide more stable protection for the batteries after being vertically stacked and connected; in addition, the upper fixing parts and the lower fixing parts of the upper and lower battery boxes are in contact with each other and fixedly connected. On the one hand, since the upper fixing part and the lower fixing part both protrude out of the side panels on the left and right sides of the battery box, it is very convenient to operate when fixing the upper fixing part and the lower fixing part. On the other hand, after the upper and lower battery boxes are fixedly connected, the upper fixing parts and the lower fixing parts of the upper and lower battery boxes are in contact with each other, so that the weight of the upper battery box can be partially transferred between the upper fixing part and the lower fixing part, and then transmitted downward, thereby effectively reducing the force acting on the bottom plate, thereby making the structure of the bottom plate more stable, and the cooling unit arranged inside it can more stably cool and dissipate heat for the battery.

[0013] Preferably, as an improvement, an auxiliary supporting portion is fixedly connected between the upper fixing portion and the lower fixing portion in the same battery box.

[0014] In this solution, an auxiliary support part is fixedly connected between the upper fixed part and the lower fixed part, and the auxiliary support part is used to further improve the structural strength of the battery case. Moreover, the force exerted by the upper battery case on the lower fixed part can be transmitted downward through the auxiliary support part, so that the connection between the upper fixed part and the lower fixed part is more stable and the structural strength of the entire battery case is also stronger.

[0015] Preferably, as an improvement, the auxiliary support portion comprises a plurality of support blocks, and the plurality of support blocks are arranged along the length direction of the side plates.

[0016] In this solution, a support block is used as an auxiliary support frame. The support block has a simple structure and is easy to connect. There are multiple support blocks, which further improves the connection strength between the upper fixing part and the lower fixing part, making the structure of the battery box more stable.

[0017] Preferably, as an improvement, the support blocks in adjacent battery boxes are arranged one by one in the vertical direction, and the support block and the lower fixing portion of the upper battery box are fixedly connected with the upper fixing portion and the support block in the lower battery box by the same fixing member.

[0018] In this solution, the number of support blocks in each battery box is equal, and the support blocks in the upper and lower battery boxes are arranged one by one in the vertical direction, so that multiple correspondingly arranged support blocks are located on the same vertical line. The support blocks on the same vertical line and the upper fixing parts and lower fixing parts of multiple battery boxes form a vertically continuous support structure, which has stronger load-bearing performance in the vertical direction, so that the upper fixing part and the lower fixing part will not be easily deformed during use, and it is more stable to use.

[0019] Preferably, as an improvement, it also includes reinforcing connectors, the number of which is equal to the number of support blocks in each battery box, and the reinforcing connectors are fixedly connected to all support blocks in the same vertical direction of all battery boxes.

[0020] In this solution, reinforcing connectors are used to connect the support blocks in the same vertical direction, so that the connection between adjacent battery boxes is more stable, further improving the stability of the entire energy storage structure.

[0021] Preferably, as an improvement, the base plate includes a middle plate and side plates fixedly connected to both sides of the middle plate, and the cooling unit includes cooling channels arranged on the middle plate and the side plates along the length direction of the base plate; the two side plates are respectively integrally formed with the two side plates.

[0022] In this solution, by setting up the structure of the middle plate and the side plate, the base plate with a very large area can be split into multiple plates for processing, thereby reducing the difficulty of processing and forming the base plate; in addition, the two side plates are respectively formed integrally with the two side plates, so that the connection between the side plates and the base plate is more stable, and at the same time, it can also reduce the assembly between the side plates and the base plate, etc., effectively saving costs.

[0023] Preferably, as an improvement, the cooling channel includes a liquid inlet cooling channel and a liquid outlet cooling channel located on both sides of the liquid inlet cooling channel; the liquid inlet cooling channel and the liquid outlet cooling channel are integrally formed on the base plate along the length direction of the base plate; the rear end of the base plate is fixedly connected to an adapter plate, and a connecting channel for connecting the liquid inlet cooling channel and the liquid outlet cooling channel is formed between the adapter plate and the base plate, and a liquid inlet interface and a liquid outlet interface are connected to the front end of the base plate, the liquid inlet interface is connected to the liquid inlet cooling channel, and the liquid outlet interface is connected to the liquid outlet cooling channel.

[0024] In the prior art, the batteries in the battery box will generate heat during use. When the battery box cannot dissipate heat in time and the temperature of the battery working environment is too high, it will affect the normal operation of the battery. Therefore, the existing battery box usually has a cooling structure on the battery box, which is used to quickly dissipate heat, so that the battery is in a suitable temperature environment. Although the batteries in the battery box in the present application can be cooled and dissipated by the upper and lower bottom plates, the conventional curved reflux cooling flow channel in the prior art is set on the bottom plate. The cooling effect of the battery is still poor. Analyzing the core reason, the inventor believes that it is mainly because the natural heat dissipation speed of the outer side of the battery box is faster. The closer to the middle of the battery box, the less quickly the heat can be dissipated, resulting in a situation where the temperature in the middle of the battery box is high and the surrounding area is low, resulting in poor uniformity of heat dissipation of the batteries in the battery box.

[0025] In order to solve the above problems, when a cooling channel is set on the bottom plate in the present solution, the cooling channel is set as a liquid inlet cooling channel and a liquid outlet cooling channel located on both sides of the liquid inlet cooling channel, so that the liquid inlet cooling channel is located in the middle of the bottom plate. Therefore, during the cooling and heat dissipation process, the cooling medium with a low temperature enters the liquid inlet cooling channel through the liquid inlet interface, first dissipates heat to the battery with a higher temperature near the middle of the bottom plate, and then the cooling medium flows to the liquid outlet cooling channels located on both sides of the bottom plate, and then dissipates heat to the batteries located on both sides of the battery box, and finally all the batteries in the battery box are more evenly cooled.

[0026] Preferably, as an improvement, the open end of the top battery box is fixedly connected to a top plate, and a top cooling channel is provided in the top plate.

[0027] In this solution, a top plate is fixedly connected to the top of the top battery box, and a cooling channel similar to the bottom plate structure is set in the top plate, so that the upper and lower sides of the batteries installed in the top battery box can be quickly cooled, effectively ensuring the heat dissipation performance of the batteries in the top battery box.

[0028] An energy storage device comprises the vertically stacked energy storage structure.

[0029] In this solution, a vertical stacked energy storage structure is provided in the energy storage device, so that the upper and lower sides of the battery can be quickly cooled at the same time, making the temperature inside the battery box more suitable for stable operation of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the battery box in the first embodiment of the utility model.

[0031] Figure 2 for Figure 1 Exploded view of the PCB (front end panels and crossbeams are hidden).

[0032] Figure 3 It is a partial cross-sectional view of a liquid inlet cavity and a liquid outlet cavity provided on the front side of the bottom plate in the first embodiment of the utility model.

[0033] Figure 4 It is a partial cross-sectional view of a connecting flow channel arranged on the rear side of the bottom plate in the first embodiment of the utility model.

[0034] Figure 5 It is a schematic diagram of a vertically stacked energy storage structure in Embodiment 1 of the present utility model.

[0035] Figure 6 It is a schematic diagram of the battery box in the second embodiment of the present utility model.

[0036] Figure 7 This is a schematic diagram of the battery box in the third embodiment of the present utility model.

[0037] Figure 8 It is a schematic diagram of a vertically stacked energy storage structure in Embodiment 3 of the present utility model.

[0038] Fig. 9 It is a schematic diagram of a vertically stacked energy storage structure in Embodiment 4 of the present utility model. DETAILED DESCRIPTION

[0039] The following is further described in detail through specific implementation methods:

[0040] The figure marks in the drawings of the specification include: bottom plate 1, middle plate 101, liquid inlet cooling channel 1011, liquid outlet cooling channel 1012, liquid inlet cavity 1013, liquid outlet cavity 1014, side plate 102, side plate 2, side plate 201, end panel 202, adapter plate 3, connecting channel 301, sealing plate 4, liquid inlet interface 5, liquid outlet interface 6, upper fixing part 7, lower fixing part 8, hollow groove 801, lock hole 9, cross beam 10, top plate 11, support seat 12, support block 13, operation window 1301, positioning pin 14, connecting column 15.

[0041] Embodiment 1

[0042] This embodiment is as shown in the attached Figure 1 , Figure 2 and Figure 5 As shown: A vertical stacking energy storage structure, including a plurality of vertically stacked fixedly connected battery boxes, wherein the battery box includes a bottom plate 1 arranged horizontally and side plates 2 arranged around the top surface of the bottom plate 1, and the bottom plate 1 and the surrounding side plates 2 form a frame with an upper end opening. Specifically, the four side plates 2 include side plates 201 located on the left and right sides of the bottom plate 1 and end panels 202 located on the front and rear sides of the bottom plate 1, and the bottom plate 1 is composed of a middle plate 101 and two side plates 102 welded to the left and right sides of the middle plate 101, wherein the two side plates 201 are respectively formed integrally with the two side plates 102 by extrusion molding.

[0043] Combination Figure 2 , Figure 3 and Figure 4 In this embodiment, a cooling unit is provided on the bottom plate 1. In this embodiment, the cooling unit includes cooling channels integrally formed on the middle plate 101 and the side plate 102 along the length direction of the bottom plate 1. Figure 3 The cooling channel includes a liquid inlet cooling channel 1011 and a liquid outlet cooling channel 1012 located on both sides of the liquid inlet cooling channel 1011, and the number of the liquid inlet cooling channel 1011 and the number of the liquid outlet cooling channel 1012 are both multiple. The liquid inlet cooling channel 1011 is mainly arranged on the middle plate 101, and the liquid outlet cooling channel 1012 is mainly arranged on the side plate 102. The number of the liquid outlet cooling channel 1012 on the two side plates 102 is the same and is symmetrically arranged along the middle plate 101.

[0044] Combination Figure 1 and Figure 2 The end panel 202 at the rear side of the bottom plate 1 is integrally formed with an adapter plate 3 that matches the rear side of the bottom plate 1 by extrusion molding. The adapter plate 3 is fixedly connected to the middle plate 101 and the two side plates 102 by stir friction welding. Figure 4 , a connecting channel 301 for connecting the liquid inlet cooling channel 1011 and the liquid outlet cooling channel 1012 is formed between the adapter plate 3 and the bottom plate 1. At the same time, a sealing plate 4 is fixedly connected to the front side of the bottom plate 1. The sealing plate 4 is fixedly connected to the middle plate 101 and the two side plates 102 by stir friction welding. The sealing plate 4 and the front end of the middle plate 101 form a liquid inlet cavity 1013. The sealing plate 4 and the front ends of the two side plates 102 form two liquid outlet cavities 1014. A liquid inlet interface 5 connected to the liquid inlet cavity 1013 is welded on the front side of the top face of the middle plate 101. A liquid outlet interface 6 is welded on the front side of the top face of each side plate 102. The two liquid outlet interfaces 6 are connected to the two liquid outlet cavities 1014 respectively.

[0045] In this embodiment, the liquid inlet cooling channel 1011 and the liquid outlet cooling channel 1012 are both located in the same horizontal plane, and the liquid inlet cooling channel 1011 and the liquid outlet cooling channel 1012 are at the same height in the vertical direction. Figure 3 As shown, the contour line of the side where the liquid inlet cavity 1013 on the middle plate 101 is connected to the liquid inlet cooling channel 1011 is bent toward the inside of the middle plate 101 (the contour line is shown as the dotted line in the figure), and the contour line is symmetrically arranged along the perpendicular midline of the width line of the middle plate 101, so that the liquid inlet cavity 1013 forms a funnel-shaped cross-sectional structure bent toward the inside of the middle plate 101, so that after the cooling medium enters the liquid inlet cavity 1013, the cooling medium can enter the multiple liquid inlet cooling channels 1011 more evenly, so that the flow rate of each liquid inlet cooling channel 1011 is not much different and the cooling effect is similar, so as to ensure the uniformity of cooling and heat dissipation of the battery by each liquid inlet cooling channel on the middle plate 101.

[0046] In addition, in this embodiment, the sum of the cross-sectional areas of all the liquid inlet cooling channels 1011 is S1, and the sum of the cross-sectional areas of all the liquid outlet cooling channels 1012 is S2, where S1 ≥ S2. Specifically, the number of the liquid inlet cooling channels 1011 is ten, and the ten liquid inlet cooling channels 1011 are symmetrically arranged along the width direction of the middle plate 101, so that the cooling medium of the five liquid inlet cooling channels 1011 on the left enters the liquid outlet cooling channel 1012 in the left side plate 102 through the connecting channel 301, and the cooling medium in the five liquid inlet cooling channels 1011 on the right enters the liquid outlet cooling channel 1012 in the right side plate 102 through the connecting channel 301. In this embodiment, S1>S2, that is, the sum of the cross-sectional areas of all the liquid inlet cooling channels 1011 is greater than the sum of the cross-sectional areas of all the liquid outlet cooling channels 1012. Therefore, in the actual cooling and heat dissipation process, the flow rate of the cooling medium in the liquid inlet cooling channel 1011 is slower, which is conducive to more sufficient heat exchange between the cooling medium and the battery and improves the heat dissipation intensity of the battery in the middle of the bottom plate 1.

[0047] In this embodiment, by setting the bottom plate 1 as the middle plate 101 and the two side plates 102, during use, the cooling medium first flows into the liquid inlet cavity 1013 from the liquid inlet interface 5, and then flows into the liquid inlet cooling channel 1011 from the liquid inlet cavity 1013. In the process of the cooling medium flowing through the liquid inlet cooling channel 1011, the middle position corresponding to the middle plate 101 on the bottom plate 1 can be cooled and dissipated; then the cooling medium flows from the liquid inlet cooling channel 1011 through the connecting channel 301 into the liquid outlet cooling channel 1012 of the two side plates 102. When the cooling medium flows through the liquid outlet cooling medium, the area corresponding to the side plates 102 on the left and right sides of the bottom plate 1 can be cooled and dissipated. Finally, the cooling medium flows into the liquid outlet cavity 1014, and finally flows out of the bottom plate 1 from the liquid outlet interface 6. In this embodiment, the cooling medium first dissipates heat to the middle area corresponding to the middle plate 101 on the bottom plate 1, and then dissipates heat to the corresponding areas of the side plates 102 on both sides, which is consistent with the use situation in which the battery temperature in the middle of the bottom plate 1 is higher during the actual application of the bottom plate 1. Therefore, the batteries in all ranges on the bottom plate 1 can be quickly and evenly cooled, effectively ensuring the heat dissipation efficiency and heat dissipation uniformity of all batteries.

[0048] Combination Figure 1 and Figure 5 In this embodiment, the outer wall of each side plate 201 is integrally formed with an upper fixing portion 7 and a lower fixing portion 8 protruding from the side plate 201, wherein the upper fixing portion 7 is a transverse plate-shaped structure, combined with Figure 3The lower fixing portion 8 is a horizontal frame structure, and a hollow groove 801 is integrally formed inside it along the length direction of the side plate 201, and the upper fixing portion 7 and the lower fixing portion 8 protrude from the side plate 201 at an equal distance. When the upper and lower battery cases are stacked vertically, the lower fixing portion 8 of the upper battery case is in contact with and fixedly connected to the fixing portion of the lower battery case. Specifically, vertically opposite locking holes 9 are provided on the upper fixing portion 7 and the lower fixing portion 8. When the upper and lower battery cases are vertically aligned, the upper fixing portion 7 and the lower fixing portion 8 can be quickly and conveniently locked and fixed by passing bolts through the locking holes 9 in the prior art, so that the upper and lower battery cases are fixed to each other, and in order to improve the stability of the upper and lower battery cases, a plurality of pairs of locking holes 9 are arranged between the upper fixing portion 7 and the lower fixing portion 8.

[0049] In this embodiment, when multiple battery cases are stacked and fixedly connected vertically, in the upper and lower adjacent battery cases, the bottom plate 1 of the upper battery case is used to seal the open end of the lower battery case frame. Therefore, during the cooling process, the batteries installed in the same battery case can not only be cooled by the bottom plate 1 of its own battery case, but also by the bottom plate 1 of the upper battery case, so that the heat dissipation effect of the batteries in the battery case is better.

[0050] like Figure 1 As shown, in order to make the battery box have good structural strength, a transversely arranged crossbeam 10 is welded in the frame structure of the battery box in this embodiment; in addition, in this embodiment, a top plate 11 is fixedly connected to the open end of the upper end of the top battery box by screws, and the structure of the top plate 11 is similar to that of the bottom plate 1, that is, the main body of the top plate 11 includes a combined structure similar to the middle plate 101 and the side plate 102, and a top cooling flow channel with the same flow direction as that in the bottom plate 1 is provided in the top plate 11.

[0051] It should be noted that, combined with Figure 1 and Figure 3 In theory, in order to facilitate processing and forming, all liquid inlet cooling channels 1011 can be set on the middle plate 101, and all liquid outlet cooling channels 1012 can be set on the side plate 102. However, in the actual processing and forming process, based on the size of the middle plate 101, the side plate 102 and the side plate 201, the middle plate 101, the side plate 102 and the side plate 201 are manufactured by extrusion molding in the molding process, which is subject to the extrusion force of the extrusion equipment. Therefore, in actual production, according to the size structure of the battery box, since the side plate 102 and the side plate 201 are integrally formed, in order to reasonably control the operability and cost of extrusion molding, in this embodiment, one of the liquid outlet cooling channels 1012 is set on the middle plate 101 to reduce the width of the side plate 102 in the lateral direction, so that the side plate 102 and the side plate 201 can be stably and conveniently integrally formed. Figure 3The two flow channels near the left and right sides of the middle plate 101 are both liquid outlet cooling flow channels 1012, so that the side plate 102 and the side plate 201 can be smoothly extruded as a whole, and the middle plate 101 can also be smoothly extruded.

[0052] In this embodiment, the upper fixing part 7 and the lower fixing part 8 are arranged on the outside of the battery case, so that adjacent battery cases can be conveniently, quickly and stably fixed, so that multiple battery cases can be stably stacked and fixed vertically, and the upper fixing part 7 and the lower fixing part 8 are respectively located on both sides of the battery case and protrude from the side walls of the battery case, so that the fixing process is more convenient to operate, and the arrangement of the upper fixing part 7 and the lower fixing part 8 improves the structural strength of the battery case, so that without using the support frame in the prior art, relying on the structural strength of the battery case itself, it can also play a role in stabilizing and protecting the batteries after multiple battery cases are vertically stacked and fixed; in addition, in this embodiment, when all the battery cases are vertically stacked and fixed, the batteries in the same battery case can be cooled and dissipated by the upper and lower bottom plates 1 at the same time, so that the batteries can dissipate heat more efficiently.

[0053] An energy storage device includes the above-mentioned vertical stacking energy storage structure, so that the energy storage device has efficient heat dissipation performance during use, thereby making the energy storage device operate more stably.

[0054] Embodiment 2

[0055] The difference between the second embodiment and the first embodiment is that: Figure 6 As shown, in this embodiment, an auxiliary support portion is fixedly connected between the upper fixing portion 7 and the lower fixing portion 8 in the same battery case, and the auxiliary support portion includes a vertically arranged support block 13, and the number of support blocks 13 is multiple, and the multiple support blocks 13 are arranged along the length direction of the side plate 201, and in this embodiment, in order to facilitate the installation and fixation of the support block 13 and further improve the overall structural strength of the battery case, the support block 13 in each battery case cooperates with the lock hole 9, so that the support blocks 13 in adjacent battery cases are arranged one by one in the vertical direction, and the support block 13 and the lower fixing portion 8 of the upper battery case are fixedly connected with the upper fixing portion 7 and the support block 13 in the lower battery case by the same fixing piece. After fixation, the upper and lower adjacent support blocks 13 in adjacent battery cases are located on the same vertical line, so that the vertically adjacent support blocks 13 of multiple battery cases form a structure similar to a vertical connecting seat, which further improves the stability and vertical bearing performance of multiple battery cases after vertical stacking and fixation.

[0056] In this embodiment, the specific connection method of the upper and lower adjacent support blocks 13 and the upper fixing portion 7 and the lower fixing portion 8 located between the support blocks 13 is as follows: Figure 6As shown, the support block 13 is hollow inside to reduce the weight of the support block 13 and improve its anti-collision performance. Four operation windows 1301 are provided on the front side of the support block 13. Each support seat 12 is correspondingly provided with two lock holes 9. At the same time, threaded holes corresponding to the two lock holes 9 are opened on the top surface of the support block 13. When fixing, it is only necessary to insert the screws in the prior art from top to bottom. Figure 6 In this state, the bottom end of the screw passes through the upper fixing part 7 and the lower fixing part 8 in sequence downward, and is threadedly fixed with the threaded hole on the top surface of the lower support block 13, so that the upper and lower adjacent support blocks 13 can be fixedly connected with the upper fixing part 7 and the lower fixing part 8 therebetween at the same time.

[0057] Embodiment 3

[0058] The difference between the third embodiment and the second embodiment is that: Figure 7 As shown, a positioning mechanism is provided between the upper and lower adjacent battery boxes. The positioning mechanism in this embodiment is a positioning pin 14 fixed to the top surface of the support block 13. Positioning holes cooperating with the positioning pin 14 are provided on the upper fixing portion 7 and the lower fixing portion 8. The positioning pin 14 and the positioning hole guide and position the adjacent battery boxes quickly in place during the vertical stacking and docking process, which is beneficial to improving the efficiency and accuracy of the vertical stacking connection of the battery boxes.

[0059] Embodiment 4

[0060] The difference between the fourth embodiment and the third embodiment is that: Figure 8 and Fig. 9 As shown, in this embodiment, after multiple battery boxes are stacked vertically, a vertically arranged connecting column 15 is fixedly connected to the outer side of the battery box by screws, and the connecting column 15 is fixedly connected to all support blocks 13 located in the same vertical direction by screws, so that all battery boxes are fixed in the vertical direction by the connecting column 15, so that the connection of the battery boxes after vertical stacking and fixed connection is more stable.

[0061] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A vertically stacked energy storage structure, characterized in that: It comprises a plurality of vertically stacked and fixedly connected battery boxes, wherein the battery boxes comprise a bottom plate and side plates arranged around the top surface of the bottom plate, wherein the bottom plate and the side plates around the bottom plate form a frame with an opening at the upper end; a cooling unit is arranged on the bottom plate, and in the upper and lower adjacent battery boxes, the bottom plate of the upper battery box is used to seal the open end of the frame of the lower battery box.

2. A vertical stacked energy storage structure according to claim 1, characterized in that: The side panels include side panels located on the left and right sides of the bottom plate and end panels located on the front and rear sides of the bottom plate. The outer sides of the side panels are provided with upper fixing portions and lower fixing portions protruding from the side panels. In the upper and lower adjacent battery boxes, the lower fixing portion of the upper battery box is in contact with and fixedly connected to the upper fixing portion of the lower battery box.

3. A vertical stacked energy storage structure according to claim 2, characterized in that: An auxiliary supporting part is fixedly connected between the upper fixing part and the lower fixing part in the same battery box.

4. A vertically stacked energy storage structure according to claim 3, characterized in that: The auxiliary support part includes a plurality of support blocks, and the plurality of support blocks are arranged along the length direction of the side plate.

5. A vertical stacked energy storage structure according to claim 4, characterized in that: The support blocks in adjacent battery boxes are arranged one by one in the vertical direction, and the support block and the lower fixing portion of the upper battery box are fixedly connected with the upper fixing portion and the support block in the lower battery box through the same fixing piece.

6. A vertically stacked energy storage structure according to claim 5, characterized in that: It also includes reinforcing connectors, the number of which is equal to the number of support blocks in each battery box, and the reinforcing connectors are fixedly connected to all support blocks in the same vertical direction of all battery boxes.

7. A vertically stacked energy storage structure according to claim 2, characterized in that: The bottom plate includes a middle plate and side plates fixedly connected to both sides of the middle plate, and the cooling unit includes cooling channels arranged on the middle plate and the side plates along the length direction of the bottom plate; the two side plates are respectively integrally formed with the two side plates.

8. A vertically stacked energy storage structure according to claim 7, characterized in that: The cooling channel includes a liquid inlet cooling channel and a liquid outlet cooling channel located on both sides of the liquid inlet cooling channel; the liquid inlet cooling channel and the liquid outlet cooling channel are integrally formed on the base plate along the length direction of the base plate; the rear end of the base plate is fixedly connected to an adapter plate, and a connecting channel for connecting the liquid inlet cooling channel and the liquid outlet cooling channel is formed between the adapter plate and the base plate, and a liquid inlet interface and a liquid outlet interface are connected to the front end of the base plate, the liquid inlet interface is connected to the liquid inlet cooling channel, and the liquid outlet interface is connected to the liquid outlet cooling channel.

9. The vertical stacked energy storage structure according to claim 1, characterized in that: The open end of the top battery box is fixedly connected with a top plate, and a top cooling channel is arranged in the top plate.

10. An energy storage device, characterized in that: It comprises a vertically stacked energy storage structure as described in any one of claims 1 to 9.

Images